Cotter-pin extractor



W. l. COOK.

ELECTRIC CIRCUIT CLOSER, APPL-loulou man ocr. lo. me. 1,382,476.

PatentedJune 21, Qf',

vl. r. .J

lll

'(fharlotte, in the eountv UNITED STATES OFFJLi.

ELECTRIC-CIRCUIT CLOSER.

1,352,476. Speecation of Letters Patent.

Application filed October 1G, 1319.

To nl! ifi/mm it may connerie.'

le it known that I, WILLIAM J. Coon, n

citizen ot the United States. residing at u of Mecklenburg and Stute of North Caroline, have invented new and useful Improvements in Eleetrie- Circuit (llosers, of Which the following is a speriliretion.

This invention relates to oirouit closers commonly known as push buttons, and one olueet is to provide en improved construction wherein the active parts are 'Free for operation and stirlrino' or jamming is procv tic-:illy impossible. i nother objeot of the invention is to provide on improved ronstruftion of Contact emhodving means for etl'eotinff adjustment to take up or compensate for weer and also to insure :L reliehle e: ifrement of the circuit making members. .ai still further object of the invention is to improve the eonstruotion of push hutten disrloeed hv mmv Patent No. 1.245.570. dated November 6. 1917. b v materially reducing the` numher of ports involved in the button organize tion of said potent and producing e plunger huvingr a rontnet hlock of such form and :irrnngement that it will always positivelv engage :i preferred form of Contact members tor the wire terminals end be seltolefminsr with materiel advantages in proridiru.T o good metallic connection and reduruq repair and f'leaning manipulations to n. minimum.

lith these find other oliierts end adventzues in vierv the invention consists ot the ronstrurtion and arrangement ot' the several ports which will he more fully hereine'llter l'lesfriherl und claimed.

Figure l is :i sectional elevation, showing' mv improved form of push button applied tor use. ns for exemple. in an elevator.

Fir?. 2 is :i front View of the parts shown hv Fig. 1.

Fig. 3 is u` longitudinal vertical section oi the imnrovefl `oush hutton showing the parte in position for makin!! e. f'irruit Fig. 4 is olonoitudinul vertical seotion oi the improved button teken in n plone et right :ingles to that shown hv Fig. fl and shon'inff the ports in normal position.

Fig. 5 is n rear end elevation of the improved hutten.

The improved push button or Cirruit '.loser oomyirises n hose plus! 5 of suitnlilf form :1nd eomposed of insulating materiel.

Patented June 2l, 1921.

Serial No. 329,714.

The plug 5 has en end flange t5 :ind u eentrol bore 7 extending` eompletelv therethrough. the seid horn eine diurne' 1 mill) enlarged :it opposite extrmnities ol the plug to forni sents 8 und 9. renter 'the sent olV dinmeter thun the sent 9 and the side wall thereof is screw-threelod to receive n. suitafihle metal socket lll huviny one @nfl ll Vullvopeu sind the opposite end ,i2 closed with the exception of a central opening 't3 n'hirh filines` with the hore 7. and the sent 9 hoe u smooth side Woll 14;. The exterior ot e portion of the plug,r 5 is sere\v-threoled to verni-re and sonure on inelosure or easing liodv l5 which is similzirlv sf'i'eiv-thrnnilefl :und ui'etcrohlv ei-'linrjlrienl the smid lio-'lv heini? `termed ol' motel ond hrli'inff' :i llz'nor-eil henrl 1G thirker than the sind hodlY :infl provided with :i centrel opening li". iithin the (mening lT n hutten l? ot the usuel materiel is movnhlv mounted und normally projerts outivnrllv bevond the outer sido of the hond lo. The hutten lg, ie limited in its outivzird more meut liv un inner flung@ lll JFormingf :a purr thereoi .find odnnterl to heer ogflinlt the inner side of 'the heed Vi nround the openine' 1.7. srreiv-threune'l sent 2f) is 'forme-Tl in the eentor of the hutten 19 :ind onor` throuirh the inner end thereof. :ind in this` sent :in exteriorlv sermv-tlirn -dell motnl socket 2l or insert is mounted :mil provided with :i threfided here 9*? nxtowlinff D11. rtiflilv therethrourfh. the .seid horn of the sodio# oneuinfY throuogh ils inner hurt The mm Muneer 2 llievino' o reir termino] woutront lio-ul or liloll.' *2.5, is se'uiref" in the threaded here o? the snol-ot Q1.. seid. ilunf'or hein@ fretl'.' verinr'rgihl@ throufrli tlm .Printer n. lli() stltl' lll. oneninfr 9 o1" the letter ond here T ot' the nil?" ,pnl''ffl'l Hl" l'rilnil (YF illl qt'lfl'fi-i l0 sind the inner end ol the solffkot @l o. shrine 2li is interposed und surrounds the nlunrvr 94 end operotos lio norrnnllv retrovior throw out the luittfin i9. ulunofer 211 und hefifl 25 when the seid luitton is relieved of pressure. The heed is normfillv Dositionod in the sent rer-ese 1.4. nt tho Peuter of the inner end ot' the plu@ 5 find szrurefl to the regir girl@ me the' Quid Dllf nnfl lis fltnff 6 et onnosite points :ire nietnllir oonduetino; strips 27 huvinfr inner prelernhlv overlenninof violfling gno-ulm fiontfifts QQ and '29 Whifh ore uormnllv sennrfitrd hut fire hrouolnt into` rirruit melting' enfmfmment hv pressure ot' the plunger heu'l 25 theren (ill against. Circuit Wires 30 and 3l are attached to the strips 27 and may be electrically connewred to any device or devices adapted to be operated by the improved push button or circuit closer.

Among many advantages or the improved push button relatively to the Structure disclosed by my patent are, a materially reduced number ol parts and a consequent re duri ion in cost oi manufacture and a simplilied assemblage; the certainty of positive engagement oi the plunger head 25 With the conta ts in and 29; the self-cleaning of thc head .45 by its wiping action relatively to the rout-acts 28 and 2l) to thereby insure a more per lect electrical contact engagement and reduce the necessity of Jfrequent repair and manual leaning of the said engaging piu-ts, and the readiness of adjustment of the` head zo to compensate for Wear and which is acomplished by exteriorly rotating the button LS in the proper direction to move the plungei` 24- and head a greater distance inwardly without disorganization of the parts of the improved;devire 1t Will be seen that the adjustment of the parte` to ronipensate l'or near is accomplished by direct actuation or rotation of the head 25 without requiring a separation of any oi' the parts of the improved push button` Iand this :nl ius'lnent may he oli'ef'ted by anyone while he improved onton is installed `and without r-l-quiring siliecial mechanical al'iility or electrical linouledgil and whereby the button may be maiutaineil in positive operating condition. The shape and arrangement of the contacts 28 and if?? will always insure a positive engagement of the one contact with the other by pressure of the head thereagainst, and moreover` the head :25 @an never bem displarefil relatively to the Said lontarts JH and Z9. The yielding` :fiction oi hc comart, o and 159 also provides for an easy ruin-onrein liiiiiling action nl the button o and plunger fil and ils head .25 when the ttor parte are depressed to malte or comtileie an elsirl al circuit in which the imovifd derive is included and prevent the renriiuug parts oly the derive boing subjected lo shoclf. or jar.

ilfluu' is rlairned is:-

l. A circuit closer ol the tlass specified, roniprising an iuclosing'easing. an insulatiifr nlug hold Within the casing. Iondncting si rips secured to the rear end of the plug for attachment of the .ircuit wires, the conducting strips having their free eitremities inwardly bent al' :in angle and overlapped and uorinallv out ot' engagement. and ai spring actuated plunger mounted in and movable hrough (he plus and having an outer illircided end with a head thereon which serves as an actuating means for the plunger and is directly rotatable relatively to the plunger to adjust the latter Without disorganizing the parts of the closer, the rear end of the plunger having a head to eilect an engagement ot the said angular contacts.

2. In a circuit rloser ol the class specified, an insulating plug having a rear liange and a central bore, an inclosiug casing secured to the plug having a flanged head with a central opening therein, a spring controlled plunger niovahly extendingl through the bore or the plug and having a contact head on its rear end, resilient condin ting strips secured to the rear end of the plug and having inwardly extending overlapping contact niembers normally out oi engagement and located at a distance from the rear outlet of ylhe Vplug bore for engagement by the said plunger head, and a button freely depressible and rotatable in the said opening oi' the hanged head of the casing and directly secured to and adjustably engaging the outer cud ol the plunger whereby the latter and contact head on tlu` rear end the roof may be adjusted by rotating the said` button to compensate ?"or Wear without disorganizing the parts of the closer.

El. In a circuit rloser of the class speriiied, an insulating plug having a, central bore opening into a trout frat of larger diameter than the bore the casing secured to the plug and having an outer head with an opening therethrough, a socket mounted in the said Ylfront seal of the plugr` the plug also having a rear enlargement iormnuf a seat recess, a spring controlled plunger uiovably mounted in said plug bore and provided with an outer threzuled end and a rear f-ontact head movable into the rear seat of the plug, yielding conducting strips secured to the inner end ot' the plug and having inwardly projecting oi erl-iniz-ing angular contacts which are normally separated and adapted to be engaged by the plunger contact head, and a button movably mounted in the head opening of the f asinfr and liavine a threaded insert opening through the inner end thereofl to adjustahly receive the outer threaded end otl the plunger and whereby by direct rotation of the said button the plunger with its contact head may be adjusted to ron'inensate for wear and insure positive engagement and operation in mnjunction with the said angular contacts it the conducting strips.

,lu testimony whereof l have hereunto set my hand in presence ol two subscribing Witnesses.

VVILLIM J. COOK.

Vitnesses:

Riviuoun T. Puumflw. (l. Duouwon'ru. 

